This air pump is a godspent. I have 2 in my different grow areas. Spendy but worth it. Super quiet, imperceptible vibration.
https://www.amazon.com/dp/B075653ZL2
I have run (3) 15 gallon Igloo coolers (3) separate 4x2 tents for the past 3 years in DWC. I have one used 1/15 hp aquarium chiller...